Mitsubishi M62338P 8-bit 3ch i2c bus d-a converter with buffer amplifier Datasheet

MITSUBISHI <STD. LINEAR ICs>
M62333P/FP
M62338P/FP
8-BIT 3CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
DESCRIPTION
PIN CONFIGURATION(TOP VIEW)
The M62333/M62338 is an integrated circuit
semiconductor of CMOS structure with 3 channels of built
in D-A converters with output buffer operational amplifiers.
The input is 2-wires serial method is used for the transfer
format of digital data to allow connection with a
microcomputer with minimum wiring.
The output buffer operational amplifier employs AB class
output circuit with sync and source drive capacity of 1.0mA
or more,and it operates in the whole voltage range from
Vcc to ground.
The M62333 and the M62338 differ only in their slave
address.
8 Vcc
Ao1 1
Ao3 3
M62333
M62338
Ao2 2
N.C. 4
7 SCL
6 SDA
5 GND
Outline 8P4 (P)
8P2S-A (FP)
N.C.:NO CONNECTION
FEATURES
• Digital data transfer format
I 2C BUS serial data method
• Output buffer operational amplifier
it operates in the whole voltage range from Vcc to
ground.
• High output current drive capacity
±1.0mA over
APPLICATION
Conversion from digital data to analog control data for
home-use and industrial equipment.
Signal gain control or automatic adjustment of DISPLAYMONITOR or CTV.
BLOCK DIAGRAM
Vcc
SCL
SDA
GND
6
5
7
8
I 2 C BUS TRANSCEIVER
POWER ON
RESET
CHANNEL
DECODER
8
8bit Latch
8bit Latch
8bit Latch
8bit upper
segment R-2R
8bit upper
segment R-2R
8bit upper
segment R-2R
1
2
3
Ao1
Ao2
Ao3
MITSUBISHI ELECTRIC
980714 rev.E (1 / 6 )
MITSUBISHI <STD. LINEAR ICs>
M62333P/FP
M62338P/FP
8-BIT 3CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
EXPLANATION OF TERMINALS
Pin No.
Symbol
Function
6
SDA
Serial data input terminal
7
SCL
Serial clock input terminal
1
Ao1
2
Ao2
3
Ao3
8
Vcc
Power supply terminal
5
GND
GND terminal
8-bit resolution D-A converter output terminal
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Conditions
Ratings
Unit
–0.3 to 7.0
V
Vcc
Supply voltage
Vin
Input voltage
–0.3 to Vcc+0.3
V
Vo
Output voltage
–0.3 to Vcc+0.3
V
Pd
Power dissipation
417 (DIP) / 272 (FP)
mW
–20 to 85
°C
–55 to 125
°C
Topr
Operating temperature
Tstg
Storage temperature
ELECTRICAL CHARACTERISTICS (Vcc=+5V±10%,GND=0V,Ta=–20 to 85°C unless otherwise noted)
Symbol
Parameter
Vcc
Suplly voltage
Icc
Supply current
MIN
Ratings
TYP
MAX
2.7
5.0
5.5
V
CLK=500kHz Operation, IAO=0µA
Data : 6Ah (at maximum current )
0
0.9
2.7
mA
SDA=SCL=GND,IAO=0µA
0
0.6
1.8
mA
10
µA
0.2VCC
V
Test conditions
IILK
Input leak current
VIL
Input low voltage
VIH
Input high voltage
VAO
Buffer amplifier output
voltage range
IAO=±100µA
IAO
Buffer amplifier output
drive range
Upper side saturation voltage=0.3V
Lower side saturation voltage=0.2V
SDL
Differential nonlinearity
SL
Nonlinearity
SZERO Zero code error
SFULL
Full scale error
Co
Output capacitative load
Ro
Buffer amplifier
output inpedance
VIN=0 to Vcc
–10
0.8VCC
IAO=±500µA
VCC=5.12V(20mV/LSB)
without load (I AO=0)
Unit
V
0.1
0.2
VCC-0.1
VCC-0.2
V
–1.0
1.0
mA
–1.0
1.0
LSB
–1.5
1.5
LSB
–2.0
2.0
LSB
–2.0
2.0
LSB
0.1
µF
5.0
MITSUBISHI ELECTRIC
V
Ω
980714 rev.E ( 2 / 6 )
MITSUBISHI <STD. LINEAR ICs>
M62333P/FP
M62338P/FP
8-BIT 3CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
I2C BUS LINE CHARACTERISTICS
Parameter
Symbol
Min.
Max.
units
0
100
KHz
fSCL
SCL clock frequency
tBU F
Time the bus must be free before a new transmission can start
4.7
-
µs
tHD :STA
Hold time START Condition. After this period,the first clock pulse is generated.
4.0
-
µs
tLOW
LOW period of the clock
4.7
-
µs
tHIGH
HIGh period of the clock
4.0
-
µs
tSU:STA
Set-up time for START condition (Only relevant for a repeated START
condition)
4.7
-
µs
tHD :DAT
Hold time DATA
0
-
µs
tSU:D AT
Set-up time DATA
250
-
ns
tR
Rise time of both SDA and SCL lines
-
1000
ns
tF
Fall time of both SDA and SCL lines
-
300
ns
tSU:STO
Set-up time for STOP condition
4.0
-
µs
• Note that a transmitter must internally provide at least a hold time to bridge the undefined region
(max.300 ns) of the falling edge of SCL.
TIMING CHART
tR, tF
tBUF
V IH
SDA
V IL
tHD:STA
tSU:DAT
tHD:DAT
tSU:STA
tSU:STO
V IH
SCL
V IL
tLOW
START
tHIGH
START
MITSUBISHI ELECTRIC
STOP
START
980714 rev.E ( 3 / 6 )
MITSUBISHI <STD. LINEAR ICs>
M62333P/FP
M62338P/FP
8-BIT 3CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
I2C BUS FORMAT
STA SLAVE ADDRESS W A
SUB ADDRESS A
STA: start condition
W: write(SDA=Low)
A: affirmation bit
STP: stop condition
• SLAVE ADDRESS
M62333
1
M62338
Last
First
0
0
1
1
1
1
1
Last
First
X
X
X
X
X
S1
Last
First
• SUB ADDRESSS
X
DAC DATA A STP
S0
Don't care
CHANNEL
SELECT DATA
0
0
1
1
1
0
CHANNEL SELECT DATA
S1
S0
Channel selection
0
0
ch1 selection
0
1
1
1
0
1
ch2 selection
ch3 selection
Don't care
• DAC DATA
First
MSB
D7
Last
LSB
D6
D5 D4
D3
D2
D1
First
MSB
D7
0
0
0
0
:
1
1
D0
Last
LSB
D6
0
0
0
0
:
1
1
D5
0
0
0
0
:
1
1
D4
0
0
0
0
:
1
1
D3
0
0
0
0
:
1
1
D2
0
0
0
0
:
1
1
D1
0
0
1
1
:
1
1
D0
0
1
0
1
:
0
1
DAC output
Vcc/256
Vcc/256
Vcc/256
Vcc/256
:
Vcc/256
Vcc
MITSUBISHI ELECTRIC
x1
x2
x3
x4
x 255
980714 rev.E ( 4 / 6 )
MITSUBISHI <STD. LINEAR ICs>
M62333P/FP
M62338P/FP
8-BIT 3CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
TIMING CHART (MODEL)
•start condition to slave address bite
SDA
1
2
3
4
5
6
7
W
2
3
4
5
6
7
8
A
3
4
5
6
7
8
A
A
SCL
D/A
output
start condition
•sub address bite
1
SDA
SCL
D/A
output
•DAC data bite to stop condition
1
SDA
2
SCL
D/A
output
stop condition
•Start condition
With SCL at HIGH,SDA line goes from HIGH to LOW
•Stop condition
With SCL at HIGH,SDA line goes from LOW to HIGH
(Under normal circumstances,SDA is changed when SCL is LOW)
•Acknowledge bit
The receiving IC has to pull down SDA line whenever receive slave data.
(The transmitting IC releases the SDA line just then transmit 8bit data.)
Digital Data Formats
STA
SLAVE ADDRESS
W
SUB ADDRESS 2 A DAC DATA 2
A
SUB ADDRESS 1
A
A
DAC DATA 1
SUB ADDRESS n
MITSUBISHI ELECTRIC
A
A DAC DATA n
A
STP
980714 rev.E (5 / 6 )
MITSUBISHI <STD. LINEAR ICs>
M62333P/FP
M62338P/FP
8-BIT 3CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIERS
PRECAUTION FOR USE
Supply voltage terminal(Vcc) is also used for D-A converter upper reference
voltage setting. IF ripple or spike is input this terminal,accuracy of D-A conversion
is down. So,when use this device,please connect capacitor among Vcc to GND
for stable D-A conversion.
This IC's output amplifier has an advantage to capacitive load.So it's no problem
at device action when connect capacitor (0.1µ F MAX) among output to GND for
every noise eliminate.
APPLICATION EXAMPLE
1 Ao1
VCC 8
10µF
Analog output
terminals
5V
2 Ao2
5V
3 Ao3
SCL 7
MCU
SDA 6
4
GND 5
Note regarding I2C BUS
• Purchase of MITSUBISHI ELECTRIC CORPORATION'S I2C components conveys a license under the
Philips I2C Patent Rights to use these components an I2C system,provided that the system comforms to
I2C Standard Specification as defined by Philips.
Keep safety first in your circuit designs!
• Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and
more reliable, but there is always the possibility that trouble may occur with them. Trouble with
semiconductors may lead to personal injury,fire or property damage. Remember to give due consideration
to safety when making your circuit design, in order to prevent fires from spreading, redundancy, malfunction
or other mishap.
MITSUBISHI ELECTRIC
980714 rev.E ( 6 / 6 )
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